FIG. 1.

Mechanical manipulations of collagen scaffolds seeded with mouse embryonic stem cells (mESCs). Experiment protocols included are as follows: static stretching—constant strain with an amplitude of 30%; static control—scaffolds were attached to one side of the system chamber and were exposed to the same experiment conditions but without additional external forces; and cyclic stretching—frequency of 0.3 Hz with a strain amplitude of 30%. Color images available online at www.liebertpub.com/tea